Merge pull request #265414 from lheckemann/fix-empty-closureInfo

closureInfo: handle empty path set explicitly
NixOS · Nov 7, 2023 · be31242 · be31242
2 parents bed5644 + bdd23d1
commit be31242
Showing 1 changed file with 11 additions and 3 deletions.
diff --git a/pkgs/build-support/closure-info.nix b/pkgs/build-support/closure-info.nix
@@ -21,14 +21,22 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ coreutils jq ];
 
+  empty = rootPaths == [];
+
   buildCommand =
     ''
       out=''${outputs[out]}
 
       mkdir $out
 
-      jq -r ".closure | map(.narSize) | add" < "$NIX_ATTRS_JSON_FILE" > $out/total-nar-size
-      jq -r '.closure | map([.path, .narHash, .narSize, "", (.references | length)] + .references) | add | map("\(.)\n") | add' < "$NIX_ATTRS_JSON_FILE" | head -n -1 > $out/registration
-      jq -r '.closure[].path' < "$NIX_ATTRS_JSON_FILE" > $out/store-paths
+      if [[ -n "$empty" ]]; then
+        echo 0 > $out/total-nar-size
+        touch $out/registration $out/store-paths
+      else
+        jq -r ".closure | map(.narSize) | add" < "$NIX_ATTRS_JSON_FILE" > $out/total-nar-size
+        jq -r '.closure | map([.path, .narHash, .narSize, "", (.references | length)] + .references) | add | map("\(.)\n") | add' < "$NIX_ATTRS_JSON_FILE" | head -n -1 > $out/registration
+        jq -r '.closure[].path' < "$NIX_ATTRS_JSON_FILE" > $out/store-paths
+      fi
+
     '';
 }